The performance of time reversal beam-forming by linear array

2012 ◽  
Author(s):  
Fu-zhou Yang ◽  
Hai-yan Wang ◽  
Xiao-hong Shen ◽  
Fei Hua
Keyword(s):  
Time Reversal ◽  
Linear Array ◽  
Beam Forming

Near- and far-field beam forming using a linear array in deep and shallow water

2014 ◽  
Vol 135 (4) ◽  
pp. 2393-2393
Author(s):  
Richard L. Culver ◽  
Brian E. Fowler ◽  
D. Chris Barber
Keyword(s):  
Shallow Water ◽  
Linear Array ◽  
Beam Forming ◽  
Far Field

scholarly journals A performance predictor of beamforming versus time-reversal based far-field wireless power transfer from linear array

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hong Soo Park ◽  
Sun K. Hong
Keyword(s):  
Time Reversal ◽  
Power Transmission ◽  
Linear Array ◽  
Wireless Power Transfer ◽  
Far Field ◽  
Power Transfer ◽  
Wireless Power ◽  
Dynamic Propagation ◽  
Received Power ◽  
Indoor Scenarios

AbstractFor far-field wireless power transfer (WPT) in a complex propagation environment, a time-reversal (TR) based WPT that can overcome the drawbacks of conventional beamforming (BF) by taking advantage of multipath has been recently proposed. However, due to the WPT performance of BF and TR depending on the complexity of the propagation environment, the performance prediction between BF versus TR would be required. We present a detailed and generalized analysis of the recently proposed performance metric referred to as the peak received power ratio (PRPR) for linear array-based WPT. Here, the effectiveness of PRPR is verified via measurement for free space and indoor scenarios. The results demonstrate that PRPR is directly related to the complexity of the propagation environment and the corresponding power transmission capability of BF and TR. That is, the higher the complexity, the greater the value of PRPR and TR outperforms BF with higher peak power given the same average transmit power and vice versa. The mode decision between BF and TR based on PRPR potentially promises efficient far-field WPT even in a dynamic propagation environment.

The Simulation of Tow Ship Noise on Towed Linear Array

2012 ◽  
Vol 433-440 ◽  
pp. 2706-2711 ◽  
Author(s):  
Juan Hui ◽  
An Bang Zhao ◽  
Kun Ping Sun ◽  
Shao Juan Wen ◽  
Jun Ying Hui
Keyword(s):  
Channel Model ◽  
Linear Array ◽  
The Other ◽  
Beam Forming ◽  
Acoustic Characteristics ◽  
Acoustical Properties ◽  
Mathematical Mode ◽  
Theoretical Support ◽  
Sonar System ◽  
Simulation Systems

Based on the acoustical properties of the tow ship noise, this paper studies the effect of tow ship noise on the towed linear array sonar system by computer simulation. The tow ship noise which is fairly approximate to the truth tow ship noise is obtained by the typical mathematical mode simulation firstly. Then the near-filed characteristics of the tow ship noise are simulated by using a simplified channel model. Finally, this thesis studies the interference of tow ship noise through beam-forming. The simulation describes acoustic characteristics of the tow ship noise well, and also provides a good theoretical support for the other simulation systems designs.

scholarly journals Design of Beam-Forming Networks for Multibeam Antenna Arrays Using Coherently Radiating Periodic Structures

2012 ◽  
Vol 10 (1) ◽  
Author(s):  
A. Arce ◽  
D.H. Covarrubias ◽  
M.A. Panduro ◽  
L.A. Garza
Keyword(s):  
Antenna Arrays ◽  
Linear Array ◽  
Periodic Structures ◽  
Pso Algorithm ◽  
Beam Forming ◽  
Sidelobe Level ◽  
Multibeam Antenna ◽  
Swarm Optimization ◽  
Beam Design ◽  
Steerable Antenna

The design of a beam-forming network (BFN) for a multibeam-steerable antenna array using Coherently RadiatingPeriodic Structures (CORPS) is presented. In this design, the input ports of the feeding network are optimized usingthe particle swarm optimization (PSO) algorithm. A two-beam design configuration of CORPS-BFN for a multibeamsteerablelinear array is proposed and analyzed. The results shown in this paper present certain interestingcharacteristics in the array factor response, in terms of sidelobe level (SLL) and directivity (D), for the scannablemultibeam linear array and the feeding network simplification for the design of BFN based on CORPS.

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